Virus on nook?

[khillRI]

Noticed something odd tonight when I plugged my nook into my PC and clicked open the nook drive to see my folders. Above all my regular folders, I now see three new ones titled ._.Trashes   .Trashes  and .Spotlight.-V100. I'm a little freaked out that my nook may have caught a virus from Adobe Digital Editions. Preliminary research suggests they may be harmless, merely some junk that came on board when I hooked my nook to my Macbook for the first time yesterday. Can anyone clue me in on what's going on here? Should I delete them? Take my nook to the emergency room? Help!

[Lugaid_Llyr]

From here: 

http://www.ghacks.net/2009/08/19/spotlight-v100-and-trashes-folders-on-usb-flash-drives/

The .spotlight-v100 and .trashes folders were created automatically by an Apple Macintosh computersystem that the USB flash drive was plugged in before. These two folders are automatically created whenever a USB flash drive is connected to a computer system running an Apple Mac operating system. Spotlight is a indexing process on the Mac that will save the information that are gathered in the .spotlight-v100 directory.

The .trashes folder on the other hand is simply a trash folder for the specific drive which is also created by Apple Macintosh computer systems. Windows users can simply delete both hidden directories to free up disk space.

[khillRI]

Thanks so much for putting my mind at ease. I was just worried it would "trash" the nook!

Much obliged for that explanation.